Attributes and styles are stripped from block elements when they are pasted in the editor

[Teresa Monahan]

To Reproduce:

1. Place the following in the Source view of the editor. This is just a styled div containing some text:

   <div name="styledDiv" style="padding-bottom: 4px; background-color: rgb(255,255,204); margin: 8px; padding-left: 4px; padding-right: 4px; padding-top: 4px; border-radius: 6px">Sample text inside a styled Div</div>
   

2. Switch back to wysiwyg mode and click on the editor contents.
3. Select the div in the elementspath bar and use Ctrl+C to copy it.
4. Insert a paragraph below the div using the magicline feature.
5. Paste the div from your clipboard using Ctrl+V

Problems:

• In FF, the div has been converted to a paragraph element and all attributes and styling have been removed.
• In Chrome, the div has been converted to a paragraph element and all attributes and styling except the background color have been removed.
• This usecase works well in IE.

Scenario 2:

1. Clear the editor contents and repeat steps 1-4 above.
2. Enter some text into the new paragraph created in step 4 above and press enter.
3. Paste the div contents from your clipboard again.

Problems:

• In IE, the div has been converted to a paragraph element and all attributes and styling have been removed.
• In Chrome, the div has been converted to a paragraph element and all attributes and styling except the background color have been removed.
• This usecase works well in FF.

Note: The name attribute in the sample code provided will always be removed when ACF is enabled. However, the same results as outlined above also occur even when ACF is disabled.

[Jakub Ś]

Problems can be reproduced from CKEditor 4.0 beta. This doesn't happen in editor 3.x.

<div name="styledDiv" style="padding: 4px; background-color: rgb(255, 255, 204); margin: 8px; border-top-left-radius: 6px; border-top-right-radius: 6px; border-bottom-right-radius: 6px; border-bottom-left-radius: 6px;">Sample text inside a styled Div</div> }}}

[Piotrek Koszuliński]

DUP was reported in #10969.

[Jakub Ś]

It seems we have quite a few issues with copy/paste and style loss - #14391, #14406, #10924.